| 摘要 |
PROBLEM TO BE SOLVED: To ensure a space widely for installing a substrate at the reverse side of a cover by a method wherein an elastic piece is formed integrally at a case, and a case-side engaging part is formed of the elastic piece on a position closer than a pressing projection to the open end-side of the case. SOLUTION: A case 11, formed square at its front, serving as a main body of a thermoregulator or the like, has an opening at its one end while the other end is closed, and an elastic piece 12 capable of deforming elastically toward the inside of the opening of the case 11 is formed at one side of the case 11 with cutting made at the side. An outward-looking engaging part 13 with a tapered rear surface 13a serving as a case-side engaging part at the opening end of the case 11 is formed as an integral part at the elastic piece 12 while a pressing projection 14 projecting toward the outside of the case 11 is formed as an integral part at the elastic piece on a position closer than the outward-looking engaging part 13 to the closed end of the case. An engaging piece 22 and a guard piece 23, being in parallel with each other, are provided at the reverse side of a square cover 21 to be attached to the opening of the case 11 so that both pieces can be placed at a right angle against the reverse side, forming an engaging part relatively working with the edge 11a on the opening of the case 11. |
